Mat.



'Nd. 866,378. I V PATENTED SEPT. 17, 1907; w. w. MITCHELL.

MAT. I APPLIOATION FILED TIAY 2, 1907.

ATTORNEYS .rH: mums Psrnas ccn, wasumanm, n. c,

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WILLIAM WALTON MITCHELL, OF NEW YORK, N. Y.

MAT.

Specification of Letters Patent.

Patented Sept. 1'7, 1907.

Application filed May 2, 1907. Serial No. 371,375.

To all whom it may concern:

Be it known that I, WILLIAM WALTON MITCHELL, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and 1111- proved Mat, of which the following is a full, clear, and exact description.

This invention relates to certain improvements in mats adapted for use in cleaning boots and shoes to remove the mud or snow therefrom, and the object of the invention is to provide a reversible mat of sheet metal inexpensive to manufacture and eficient in operation.

The mat is so constructed as to present a sharp scraping reinforced edge whichever side up the mat happens to be placed, and is so constructed that it cannot flatten out or become bent out of shape by hard usage. The mat is non-corrodible and is very easily cleaned.

The invention consists in certain features of construction and combinations of parts, all of which will be fully set forth hereinafter and particularly pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in both figures, and in which Figure 1 is a perspective view of a mat constructed in accordance with my invention; and Fig. 2 is an end view of a portion of a mat involving a slightly modified construction.

My improved mat is formed of a piece of sheet metal, preferably galvanized iron, which is corrugated to form angular flutes presenting right angled or acute angled ridges 10. The outer edges are bent backward to form a reinforced scraping edge 11 of double thickness and the two opposite edges are inclined in opposite direction, whereby an upwardly directed scraping edge will be presented whichever side up the mat happens to be placed. The ridges extend parallel and unbroken throughout the length of the mat and form a series of sharp scraping edges by means of which the mud or snow may be readily removed from the boots or shoes.

In order to prevent the mat from spreading and the ridges so flattened as to become ineffectual for cleaning purposes, I provide reinforcing bolts 12 adjacent each end of the mat and extending through perforations in the opposite sides of each flute or corrugation, as is clearly indicated in the drawings. The ends of the bolts are provided with washers 13 having faces inclined to the angle of the terminal corrugation and held in place by suitable nuts 14. The bolts not only serve to prevent the entire mat from spreading or flattening out, but also prevent the mat from being warped or bent out of shape and keep the ridges all in substantially the same plane. The terminal edges preferably extend to a slightly greater elevation than do the ridges 10, as illustrated at 11 in Fig. 2 whereby the said terminal edges may more effectively serve to clean the hollow of the shoe in front of the heel.

The mat is very readily cleaned as there are no openings or small recesses in which the dirt may lodge, and as the grooves are parallel and unbroken throughout their length, the dirt may be readily removed by brushing lthe mat longitudinally with a broom. The sides of the several flutes or corrugations may, if desired, be provided with openings, whereby a portion of the dirt may pass through to the under side of the mat.

ggl Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1 A door-mat formed of a sheet of metal having angular flutes presenting sharp ridges and having one edge thereof folded back upon itself to form a reinforced serapeu the edge of which lies in a different plane from said ridges.

2. A reversible door mat formed of a sheet of metal having angular flutes presenting sharp ridges and having the opposite edges reinforced and inclined in opposite directions whereby one edge forms a scraper.

A reversible dcor mat formed of a sheet of metal having angular flutes presenting sharp ridges unbroken throughout the length of the mat and having the opposite edges reinforced and inclined in opposite directions whereby one edge forms a scraper, and means for preventing the flutes from flattening.

et. A reversible door mat formed of a sheet of metal having angular flutes presenting substantially parallel ridges lying in the same plane and unbroken throughout the length of the mat and having the opposite edges inclined in opposite directions and reinforced by folding the edge back upon itself, and stay bolts extending substantially throughout the width of the mat at each end thereof and passing through each flute to prevent the mat from spreading or the flutes from flattening.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM WALTON MITCHELL.

Witnesses:

CHAS. W. RYERSON, C. W. MITCHELL. 

